function H = himmelblau_hessian(x1, x2)
- ##
- ## The Hessian of the Himmelblau function. See himmelblau.m for more
- ## information.
- ##
+ %
+ % The Hessian of the Himmelblau function. See himmelblau.m for more
+ % information.
+ %
H = zeros(2,2);
H(1,1) = 12*x1^2 + 4*x2 - 42;
H(1,2) = 4*x1 + 4*x2;
- H(2,1) = 4*x1 + 4*x2;
+ H(2,1) = H(1,2);
H(2,2) = 12*x2^2 + 4*x1 - 26;
end